Comparison

Buoyancy Calc vs Diver Tools

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Buoyancy Calc

Calculate the optimal weight for scuba diving based on environmental factors. Input your weight, water type, tank, and exposure suit to get a suggested weight for neutral buoyancy.

Highlights
  • Calculate suggested diving weight
  • Adjust for water type
  • Adjust for tank type
  • Adjust for exposure suit
  • Supports pounds and kilograms
Features
Read full description

Quickly find out the suggested weight you should add when scuba diving in different environments. Based on PADI's Peak Performance Buoyancy basic weighting guideline*. Enter your weight in pounds or kilograms, and additionally set the type of water, tank, and exposure suit to dial in a suggested amount of weight to help keep you neutrally buoyant. *Note that this app and the developer are not officially a representative of PADI. This app will give the user a good estimate of the weight needed for the environment selected, but there are always adjustments needed to achieve peak performance, based on gender, physique, exposure suit age, accessories, etc.

About

Diver Tools

Features
Read full description

Experience the ultimate dive companion with Dive Genius! Designed for rebreather and technical divers, this app revolutionizes the way you prepare for your dives, ensuring safety and convenience every step of the way. Customizable Checklists: Say goodbye to paper-based checklists! Dive Genius allows you to create personalized checklists tailored to your specific needs. From equipment packing to dive plans, you can easily organize and manage all the essential details in one place. Now you control the order of checklist displays! No more relying on memory or risking incomplete preparations. Offline Calculations: Dive sites without internet access? No problem! Dive Genius comes equipped with a built-in calculator, empowering you to perform essential dive calculations even without an internet connection. From gas mixes to decompression stops, have all the vital calculations at your fingertips. Safety and Equipment Confidence: Ensure your dive equipment meets the highest standards with Dive Genius. Set your personal limits and rely on the app's checklists to avoid compromising situations with marginal equipment. Dive with confidence, knowing that you are fully prepared and equipped for a safe and enjoyable dive. Historical Cell Readings: For rebreather divers, Dive Genius offers unparalleled insights. Keep track of your rebreather cells' performance by reviewing the last four historical readings plus store vendor and lot details. Detect any unexpected changes and make informed decisions based on accurate data. Stay ahead of the curve and dive with peace of mind. Now with the ability to store 3, 4, 5 or 6 cells! Cave Conditions: See and report on the latest conditions in the caves! Don't miss out on the must-have app for tech divers and rebreather enthusiasts. Experience the convenience, safety, and reliability of Dive Genius today!

Screenshots

Buoyancy Calc1 screens
Diver Tools4 screens

Verdict

The call

The clearest difference is price: Buoyancy Calc at Free against Diver Tools's $9.99. Buoyancy Calc also leads on ads (none vs shown) and device support (3 vs 1). Diver Tools's advantage is update cadence (every 5 weeks vs every 3 months). On in-app purchases and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Buoyancy Calc is free to download; Diver Tools costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Buoyancy Calc ships an update every 3 months, Diver Tools every 5 weeks. The most recent releases landed on June 8, 2026 and September 8, 2026 respectively.

Scorecard4 real differences · 6 level
Buoyancy Calc versus Diver Tools: the parameters behind the verdict, then further details
ParameterBuoyancy CalcDiver Tools
PriceFree — better$9.99
Rating3.1 (25 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings25 — better—
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.0
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperEric HamiterMichael Gibby

In-app purchases

None

Buoyancy Calc

No in-app purchases

None

Diver Tools

No in-app purchases

Questions

Is Buoyancy Calc free?
Buoyancy Calc is free to download, with no in-app purchases.
Is Diver Tools free?
Diver Tools costs $9.99, with no in-app purchases.
Do Buoyancy Calc or Diver Tools have ads?
Diver Tools shows ads; Buoyancy Calc does not.
Which is updated more often, Buoyancy Calc or Diver Tools?
Buoyancy Calc ships an update every 3 months, and Diver Tools every 5 weeks. Most recently, Buoyancy Calc was updated on June 8, 2026 and Diver Tools on September 8, 2026.

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